binder: 20462:20470 transaction failed 29189/-3, size 72-24 line 3136
binder: undelivered TRANSACTION_ERROR: 29189
binder: 20462:20470 got transaction to invalid handle
binder: 20462:20470 transaction failed 29201/-22, size 0-0 line 3013
binder: 20462:20470 ioctl c0306201 20000080 returned -14
INFO: task kworker/u4:5:2128 blocked for more than 140 seconds.
      Not tainted 4.9.141+ #1
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
kworker/u4:5    D26104  2128      2 0x80000000
Workqueue: events_unbound fsnotify_mark_destroy_workfn
 ffff8801d2c82f80 0000000000000000 ffff8801d139ee00 ffff8801da6f2f80
 ffff8801db721018 ffff8801cc1977c0 ffffffff828075c2 ffffffff83cd8580
 ffffffff00000000 fffffbfff08489a8 006f24ce00000001 ffff8801db7218f0
Call Trace:
 [<ffffffff82808aef>] schedule+0x7f/0x1b0 kernel/sched/core.c:3553
 [<ffffffff828142d5>] schedule_timeout+0x735/0xe20 kernel/time/timer.c:1771
 [<ffffffff8280a63f>] do_wait_for_common kernel/sched/completion.c:75 [inline]
 [<ffffffff8280a63f>] __wait_for_common kernel/sched/completion.c:93 [inline]
 [<ffffffff8280a63f>] wait_for_common+0x3ef/0x5d0 kernel/sched/completion.c:101
 [<ffffffff8280a838>] wait_for_completion+0x18/0x20 kernel/sched/completion.c:122
 [<ffffffff81246014>] __synchronize_srcu+0x254/0x3b0 kernel/rcu/srcu.c:448
 [<ffffffff8124618e>] synchronize_srcu+0x1e/0x40 kernel/rcu/srcu.c:492
 [<ffffffff815e64cf>] fsnotify_mark_destroy_list+0x10f/0x390 fs/notify/mark.c:551
 [<ffffffff815e675e>] fsnotify_mark_destroy_workfn+0xe/0x10 fs/notify/mark.c:561
 [<ffffffff81131001>] process_one_work+0x831/0x15f0 kernel/workqueue.c:2092
 [<ffffffff81131e96>] worker_thread+0xd6/0x1140 kernel/workqueue.c:2226
 [<ffffffff81142c3d>] kthread+0x26d/0x300 kernel/kthread.c:211
 [<ffffffff82817a5c>] ret_from_fork+0x5c/0x70 arch/x86/entry/entry_64.S:373

Showing all locks held in the system:
2 locks held by khungtaskd/24:
 #0:  (rcu_read_lock){......}, at: [<ffffffff8131c0cc>] check_hung_uninterruptible_tasks kernel/hung_task.c:168 [inline]
 #0:  (rcu_read_lock){......}, at: [<ffffffff8131c0cc>] watchdog+0x11c/0xa20 kernel/hung_task.c:239
 #1:  (tasklist_lock){.+.+..}, at: [<ffffffff813fe63f>] debug_show_all_locks+0x79/0x218 kernel/locking/lockdep.c:4336
1 lock held by rsyslogd/1896:
 #0:  (&f->f_pos_lock){+.+.+.}, at: [<ffffffff8156cc7c>] __fdget_pos+0xac/0xd0 fs/file.c:781
2 locks held by getty/2023:
 #0:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82815952>] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367
 #1:  (&ldata->atomic_read_lock){+.+...}, at: [<ffffffff81d37362>] n_tty_read+0x202/0x16e0 drivers/tty/n_tty.c:2142
2 locks held by kworker/u4:5/2128:
 #0:  ("events_unbound"){.+.+.+}, at: [<ffffffff81130f0c>] process_one_work+0x73c/0x15f0 kernel/workqueue.c:2085
 #1:  ((reaper_work).work){+.+...}, at: [<ffffffff81130f44>] process_one_work+0x774/0x15f0 kernel/workqueue.c:2089

=============================================

NMI backtrace for cpu 1
CPU: 1 PID: 24 Comm: khungtaskd Not tainted 4.9.141+ #1
 ffff8801d9907d08 ffffffff81b42e79 0000000000000000 0000000000000001
 0000000000000001 0000000000000001 ffffffff810983b0 ffff8801d9907d40
 ffffffff81b4df89 0000000000000001 0000000000000000 0000000000000002
Call Trace:
 [<ffffffff81b42e79>] __dump_stack lib/dump_stack.c:15 [inline]
 [<ffffffff81b42e79>] dump_stack+0xc1/0x128 lib/dump_stack.c:51
 [<ffffffff81b4df89>] nmi_cpu_backtrace.cold.0+0x48/0x87 lib/nmi_backtrace.c:99
 [<ffffffff81b4df1c>] nmi_trigger_cpumask_backtrace+0x12c/0x151 lib/nmi_backtrace.c:60
 [<ffffffff810984b4>] arch_trigger_cpumask_backtrace+0x14/0x20 arch/x86/kernel/apic/hw_nmi.c:37
 [<ffffffff8131c65d>] trigger_all_cpu_backtrace include/linux/nmi.h:58 [inline]
 [<ffffffff8131c65d>] check_hung_task kernel/hung_task.c:125 [inline]
 [<ffffffff8131c65d>] check_hung_uninterruptible_tasks kernel/hung_task.c:182 [inline]
 [<ffffffff8131c65d>] watchdog+0x6ad/0xa20 kernel/hung_task.c:239
 [<ffffffff81142c3d>] kthread+0x26d/0x300 kernel/kthread.c:211
 [<ffffffff82817a5c>] ret_from_fork+0x5c/0x70 arch/x86/entry/entry_64.S:373
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 20474 Comm: syz-executor.4 Not tainted 4.9.141+ #1
task: ffff8801a0f44740 task.stack: ffff8801cd208000
RIP: 0010:[<ffffffff8131ba80>] 
c [<ffffffff8131ba80>] __read_once_size include/linux/compiler.h:243 [inline]
RIP: 0010:[<ffffffff8131ba80>] 
c [<ffffffff8131ba80>] check_kcov_mode kernel/kcov.c:68 [inline]
RIP: 0010:[<ffffffff8131ba80>] 
c [<ffffffff8131ba80>] __sanitizer_cov_trace_pc+0x20/0x50 kernel/kcov.c:100
RSP: 0018:ffff8801cd20f6c8  EFLAGS: 00000246
RAX: ffff8801a0f44740 RBX: ffff8801cd20f920 RCX: dffffc0000000000
RDX: 0000000000000000 RSI: ffffffff814957f3 RDI: ffff8801cd20f9a8
RBP: ffff8801cd20f6c8 R08: ffff8801a0f45010 R09: eb2e09fdc571bf56
R10: ffff8801a0f44740 R11: 0000000000000001 R12: 0000000000001000
R13: 0000000000001000 R14: ffffea0006b037c0 R15: ffff8801d1c4b9a8
FS:  00007f2d40da3700(0000) GS:ffff8801db600000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000738000 CR3: 00000001caa95000 CR4: 00000000001606b0
Stack:
 ffff8801cd20f708
c ffffffff814957f3
c ffffffff814be468
c 00007f2d41535000
c
 00007f2d41536000
c 0000000000000005
c ffffea0006b037c0
c ffff8801d1c4b9a8
c
 ffff8801cd20f868
c ffffffff81499b10
c 1ffff10039a41efc
c dffffc0000000003
c
Call Trace:
 [<ffffffff814957f3>] __tlb_remove_page_size+0x193/0x500 mm/memory.c:307
 [<ffffffff81499b10>] __tlb_remove_page include/asm-generic/tlb.h:163 [inline]
 [<ffffffff81499b10>] zap_pte_range mm/memory.c:1165 [inline]
 [<ffffffff81499b10>] zap_pmd_range mm/memory.c:1249 [inline]
 [<ffffffff81499b10>] zap_pud_range mm/memory.c:1270 [inline]
 [<ffffffff81499b10>] unmap_page_range+0xe60/0x1680 mm/memory.c:1291
 [<ffffffff8149a44c>] unmap_single_vma+0x11c/0x170 mm/memory.c:1336
 [<ffffffff8149ab51>] unmap_vmas+0x81/0xd0 mm/memory.c:1366
 [<ffffffff814b0c2c>] exit_mmap+0x1cc/0x3a0 mm/mmap.c:3021
 [<ffffffff810d265d>] __mmput kernel/fork.c:884 [inline]
 [<ffffffff810d265d>] mmput+0xcd/0x360 kernel/fork.c:906
 [<ffffffff810e6b89>] exit_mm kernel/exit.c:514 [inline]
 [<ffffffff810e6b89>] do_exit+0x6c9/0x2a50 kernel/exit.c:820
 [<ffffffff810ed3a1>] do_group_exit+0x111/0x300 kernel/exit.c:937
 [<ffffffff8110eb61>] get_signal+0x4e1/0x1460 kernel/signal.c:2321
 [<ffffffff81052aa5>] do_signal+0x95/0x1b00 arch/x86/kernel/signal.c:807
 [<ffffffff81003e2e>] exit_to_usermode_loop+0x10e/0x150 arch/x86/entry/common.c:158
 [<ffffffff81005932>] prepare_exit_to_usermode arch/x86/entry/common.c:194 [inline]
 [<ffffffff81005932>] syscall_return_slowpath arch/x86/entry/common.c:263 [inline]
 [<ffffffff81005932>] do_syscall_64+0x3e2/0x550 arch/x86/entry/common.c:290
 [<ffffffff82817893>] entry_SYSCALL_64_after_swapgs+0x5d/0xdb
Code: 
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c